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31.
Gender,Contraceptive Attitudes,and Condom Use in Adolescent Romantic Relationships: A Dyadic Approach 下载免费PDF全文
Sara A. Vasilenko Derek A. Kreager Eva S. Lefkowitz 《Journal of research on adolescence》2015,25(1):51-62
Although sexual risk behavior occurs in a dyadic context, most studies of adolescent sexual behavior focus on individuals. This study uses couple data (N = 488 couples) from the National Longitudinal Study of Adolescent Health to examine how partners' contraceptive attitudes correlate over time and whether male or female partners' attitudes are better predictors of condom use. Net of their own prior attitudes, partners' prior attitudes predicted both male and female adolescents' Wave 2 attitudes. This association was stronger for female than for male adolescents, suggesting that female attitudes were influenced more by males' prior attitudes than vice versa. When entered together, only male adolescents' attitudes predicted dyadic condom use. Findings suggest that male partners may have greater influence on adolescent contraceptive decisions and that prevention programs should emphasize the relational context of sexual behavior. 相似文献
32.
Danuta Biterman Eva Franzén Gudrun Persson 《International Journal of Social Welfare》2007,16(S1):S5-S10
33.
The Gender Revolution: A Framework for Understanding Changing Family and Demographic Behavior 下载免费PDF全文
Frances Goldscheider Eva Bernhardt Trude Lappegård 《Population and development review》2015,41(2):207-239
This article argues that the trends normally linked with the second demographic transition (SDT) may be reversed as the gender revolution enters its second half by including men more centrally in the family. We develop a theoretical argument about the emerging consequences of this stage of the gender revolution and review research results that bear on it. The argument compares the determinants and consequences of recent family trends in industrialized societies provided by two narratives: the SDT and the gender revolution in the public and private spheres. Our argument examines differences in theoretical foundations and positive vs. negative implications for the future. We focus primarily on the growing evidence for turnarounds in the relationships between measures of women's human capital and union formation, fertility, and union dissolution, and consider evidence that men's home involvement increases union formation and fertility and decreases union instability. Although the family trends underlying the SDT and the gender revolution narratives are ongoing and a convincing view of the phenomenon has not yet emerged, the wide range of recent research results documenting changing, even reversing relationships suggests that the gender approach is increasingly the more fruitful one. 相似文献
34.
Dissemination of risk information is ubiquitous in contemporary society. We explore how individuals react in everyday life to health-risk information, based on what they report in personal interviews. Health-risk information was without exception recognized as unstable and inconsistent. This conformity, however, did not extend to the narratives regarding how health-risk information should be handled. Two opposite positions (ideal-typical strategies) are presented. Either you tend to process and evaluate new information or you tend to ignore it as a whole. Our attempt to reveal the underlying rationality in these two very different approaches involved the exploration of three different avenues of interpretation and brings together two scientific paradigms--economics and sociology--that provide the framework for our analysis. First, we suggest that a greater long-term experience of explicit choice implies that this kind of action becomes more natural and less resource consuming, whereas a reliance on habits in daily life--a natural adjustment to a lack of resources--makes it is more costly to bother about new information. Second, with fewer resources in the short run, fewer opportunities to mitigate bad outcomes, and greater exposure to social and material risks, one is less likely to devote resources to deal with health-risk information. Third, there are several possible links between a low propensity to take account of risk information and a high relative importance of genuine uncertainty in one's life. These theoretical perspectives provide a viable set of hypotheses regarding mechanisms that may contribute to social differences in the response to health-risk information. 相似文献
35.
It is frequently assumed that a poor psychosocial working environment will create conditions that encourage bullying. However, few studies have examined this assumption while comparing work environment ratings of bullied and non-bullied employees who work in the same organization and/or department. The objectives of this study were therefore, first, to investigate relationships between bullying and other psychosocial work environment factors within a particular organizational setting and, second, to investigate if bullied employees reported higher levels of stress than non-bullied employees. A total of 186 blue-collar employees from a Danish manufacturing company participated in the study (response rate of 93%). Results showed significant differences in bullied and non-bullied employees' ratings of psychosocial factors such as job control, management style, role clarity, social climate, social contact and work centrality. In order to investigate assumptions that a poor psychosocial work environment creates conditions that encourage bullying, a number of analyses compared the company's manufacturing departments with either high, medium or low levels of bullying. Results showed significant departmental differences. Yet, when bullied employees were removed from the statistical analyses, with regard to the perceived psychosocial environment these same departments could be differentiated only on the basis of rated job demands and management style. The results therefore bring into question the assumption that a generally poor work environment contributes to bullying. None the less, they do suggest that management style may directly or indirectly have contributed to a higher level of bullying. Also, bullied employees reported significantly more symptoms of psychological stress and mental fatigue than non-bullied employees. 相似文献
36.
Eva Cantoni 《Revue canadienne de statistique》2004,32(2):169-180
The author introduces robust techniques for estimation, inference and variable selection in the analysis of longitudinal data. She first addresses the problem of the robust estimation of the regression and nuisance parameters, for which she derives the asymptotic distribution. She uses weighted estimating equations to build robust quasi‐likelihood functions. These functions are then used to construct a class of test statistics for variable selection. She derives the limiting distribution of these tests and shows its robustness properties in terms of stability of the asymptotic level and power under contamination. An application to a real data set allows her to illustrate the benefits of a robust analysis. 相似文献
37.
38.
The relation between change points in multivariate surveillance is important but seldom considered. The sufficiency principle is here used to clarify the structure of some problems, to find efficient methods, and to determine appropriate evaluation metrics. We study processes where the changes occur simultaneously or with known time lags. The surveillance of spatial data is one example where known time lags can be of interest. A general version of a theorem for the sufficient reduction of processes that change with known time lags is given. A simulation study illustrates the benefits or the methods based on the sufficient statistics. 相似文献
39.
Magnus Karlsson Eva Jeppsson Grassman Jan‐Hkan Hansson 《Nonprofit management & leadership》2002,13(2):155-167
This article identifies two different perspectives used when studying self‐help groups: the professional treatment perspective and the voluntary action perspective. An outline of the perspectives leads to a discussion of their consequences for self‐help group research. The authors categorize about five hundred scientific publications from all over the world on the basis of the perspectives they present on self‐help groups; the results indicate that different perspectives seem to be preferred in different countries and when discussing different subjects. Finally, the authors suggest questions and concepts that the perspectives generate, and they emphasize the importance of being aware of which perspective is used in the study of self‐help groups. 相似文献
40.
The excess of zeros is not a rare feature in count data. Statisticians advocate the Poisson-type hurdle model (among other techniques) as an interesting approach to handle this data peculiarity. However, the frequency of gross errors and the complexity intrinsic to some considered phenomena may render this classical model unreliable and too limiting. In this paper, we develop a robust version of the Poisson hurdle model by extending the robust procedure for GLM of Cantoni and Ronchetti (2001) to the truncated Poisson regression model. The performance of the new robust approach is then investigated via a simulation study, a real data application and a sensitivity analysis. The results show the reliability of the new technique in the neighborhood of the truncated Poisson model. This robust modelling approach is therefore a valuable complement to the classical one, providing a tool for reliable statistical conclusions and to take more effective decisions. 相似文献